netdev - Re: [PATCH net-next-2.6] ethtool: Compat handling for struct ethtool

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Date:	Mon, 28 Feb 2011 19:12:50 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	David Miller <davem@...emloft.net>
Cc:	alexander.h.duyck@...el.com, santwona.behera@....com,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next-2.6] ethtool: Compat handling for struct
 ethtool_rxnfc

On Mon, 2011-02-28 at 11:06 -0800, David Miller wrote:
> From: Ben Hutchings <bhutchings@...arflare.com>
> Date: Mon, 28 Feb 2011 18:22:26 +0000
> 
> > This structure was accidentally defined such that its layout can
> > differ between 32-bit and 64-bit processes.  Add compat structure
> > definitions and functions to copy from/to user-space with the
> > necessary adjustments.
> > 
> > Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
> 
> Please implement this via the proper contextual compat ioctl handling
> in net/socket.c
> 
> Using is_compat_task() is heavily discouraged.

This is going to be even more horrible.  But I'll try it.

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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